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require 'abstract_unit'
require 'active_support/core_ext/class/inheritable_attributes'
class ClassInheritableAttributesTest < Test::Unit::TestCase
def setup
@klass = Class.new
end
def test_reader_declaration
assert_nothing_raised do
@klass.class_inheritable_reader :a
assert_respond_to @klass, :a
assert_respond_to @klass.new, :a
end
end
def test_writer_declaration
assert_nothing_raised do
@klass.class_inheritable_writer :a
assert_respond_to @klass, :a=
assert_respond_to @klass.new, :a=
end
end
def test_writer_declaration_without_instance_writer
assert_nothing_raised do
@klass.class_inheritable_writer :a, :instance_writer => false
assert_respond_to @klass, :a=
assert !@klass.new.respond_to?(:a=)
end
end
def test_accessor_declaration
assert_nothing_raised do
@klass.class_inheritable_accessor :a
assert_respond_to @klass, :a
assert_respond_to @klass.new, :a
assert_respond_to @klass, :a=
assert_respond_to @klass.new, :a=
end
end
def test_accessor_declaration_without_instance_writer
assert_nothing_raised do
@klass.class_inheritable_accessor :a, :instance_writer => false
assert_respond_to @klass, :a
assert_respond_to @klass.new, :a
assert_respond_to @klass, :a=
assert !@klass.new.respond_to?(:a=)
end
end
def test_array_declaration
assert_nothing_raised do
@klass.class_inheritable_array :a
assert_respond_to @klass, :a
assert_respond_to @klass.new, :a
assert_respond_to @klass, :a=
assert_respond_to @klass.new, :a=
end
end
def test_array_declaration_without_instance_writer
assert_nothing_raised do
@klass.class_inheritable_array :a, :instance_writer => false
assert_respond_to @klass, :a
assert_respond_to @klass.new, :a
assert_respond_to @klass, :a=
assert !@klass.new.respond_to?(:a=)
end
end
def test_hash_declaration
assert_nothing_raised do
@klass.class_inheritable_hash :a
assert_respond_to @klass, :a
assert_respond_to @klass.new, :a
assert_respond_to @klass, :a=
assert_respond_to @klass.new, :a=
end
end
def test_hash_declaration_without_instance_writer
assert_nothing_raised do
@klass.class_inheritable_hash :a, :instance_writer => false
assert_respond_to @klass, :a
assert_respond_to @klass.new, :a
assert_respond_to @klass, :a=
assert !@klass.new.respond_to?(:a=)
end
end
def test_reader
@klass.class_inheritable_reader :a
assert_nil @klass.a
assert_nil @klass.new.a
@klass.send(:write_inheritable_attribute, :a, 'a')
assert_equal 'a', @klass.a
assert_equal 'a', @klass.new.a
assert_equal @klass.a, @klass.new.a
assert_equal @klass.a.object_id, @klass.new.a.object_id
end
def test_writer
@klass.class_inheritable_reader :a
@klass.class_inheritable_writer :a
assert_nil @klass.a
assert_nil @klass.new.a
@klass.a = 'a'
assert_equal 'a', @klass.a
@klass.new.a = 'A'
assert_equal 'A', @klass.a
end
def test_array
@klass.class_inheritable_array :a
assert_nil @klass.a
assert_nil @klass.new.a
@klass.a = %w(a b c)
assert_equal %w(a b c), @klass.a
assert_equal %w(a b c), @klass.new.a
@klass.new.a = %w(A B C)
assert_equal %w(a b c A B C), @klass.a
assert_equal %w(a b c A B C), @klass.new.a
end
def test_hash
@klass.class_inheritable_hash :a
assert_nil @klass.a
assert_nil @klass.new.a
@klass.a = { :a => 'a' }
assert_equal({ :a => 'a' }, @klass.a)
assert_equal({ :a => 'a' }, @klass.new.a)
@klass.new.a = { :b => 'b' }
assert_equal({ :a => 'a', :b => 'b' }, @klass.a)
assert_equal({ :a => 'a', :b => 'b' }, @klass.new.a)
end
def test_inheritance
@klass.class_inheritable_accessor :a
@klass.a = 'a'
@sub = eval("class FlogMe < @klass; end; FlogMe")
@klass.class_inheritable_accessor :b
assert_respond_to @sub, :a
assert_respond_to @sub, :b
assert_equal @klass.a, @sub.a
assert_equal @klass.b, @sub.b
assert_equal 'a', @sub.a
assert_nil @sub.b
@klass.b = 'b'
assert_not_equal @klass.b, @sub.b
assert_equal 'b', @klass.b
assert_nil @sub.b
@sub.a = 'A'
assert_not_equal @klass.a, @sub.a
assert_equal 'a', @klass.a
assert_equal 'A', @sub.a
@sub.b = 'B'
assert_not_equal @klass.b, @sub.b
assert_equal 'b', @klass.b
assert_equal 'B', @sub.b
end
def test_array_inheritance
@klass.class_inheritable_accessor :a
@klass.a = []
@sub = eval("class SubbyArray < @klass; end; SubbyArray")
assert_equal [], @klass.a
assert_equal [], @sub.a
@sub.a << :first
assert_equal [:first], @sub.a
assert_equal [], @klass.a
end
def test_array_inheritance_
@klass.class_inheritable_accessor :a
@klass.a = {}
@sub = eval("class SubbyHash < @klass; end; SubbyHash")
assert_equal Hash.new, @klass.a
assert_equal Hash.new, @sub.a
@sub.a[:first] = :first
assert_equal 1, @sub.a.keys.size
assert_equal 0, @klass.a.keys.size
end
def test_reset_inheritable_attributes
@klass.class_inheritable_accessor :a
@klass.a = 'a'
@sub = eval("class Inheriting < @klass; end; Inheriting")
assert_equal 'a', @klass.a
assert_equal 'a', @sub.a
@klass.reset_inheritable_attributes
@sub = eval("class NotInheriting < @klass; end; NotInheriting")
assert_nil @klass.a
assert_nil @sub.a
end
end
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